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On Cournot Markets


  • Khadidja Benallou

    (Phd student - UFR de sciences économiques et de gestion, Université de Caen Basse-Normandie, CREM-CNRS, UMR 6211)

  • Daniel Danau

    (UFR de sciences économiques et de gestion, Université de Caen Basse-Normandie, CREM-CNRS, UMR 6211)

  • Abderrahmane Ziad

    (UFR de sciences économiques et de gestion, Université de Caen Basse-Normandie, CREM-CNRS, UMR 6211)


This paper focuses on the existence of a Cournot equilibrium in a n- firm Cournot market for a single homogeneous commodity. Using a simple argument and proof, it shows that a Cournot equilibrium exists if each firm's marginal revenue declines with its own output and some weak non-decreasing incremental cost condition is satisfied.

Suggested Citation

  • Khadidja Benallou & Daniel Danau & Abderrahmane Ziad, 2012. "On Cournot Markets," Economics Working Paper Archive (University of Rennes 1 & University of Caen) 201219, Center for Research in Economics and Management (CREM), University of Rennes 1, University of Caen and CNRS.
  • Handle: RePEc:tut:cremwp:201219

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    References listed on IDEAS

    1. Robert Hutchens, 2004. "One Measure of Segregation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 45(2), pages 555-578, May.
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    More about this item


    Cournot Competition; existence of Cournot equilibrium; supermodular games;

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium

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